fix: channel duplication root fix - ready gate + conv_id-first + Discord API search + hash pre-init

watcher.py

@@ -52,13 +52,30 @@ class BrainEventHandler(FileSystemEventHandler):
         self._initialize_known_sessions()
 
     def _initialize_known_sessions(self):
-        """Scan existing brain directories to establish baseline (no events emitted)."""
+        """Scan existing brain directories to establish baseline (no events emitted).
+        Also pre-loads content hashes for watched files to prevent spurious events.
+        """
         brain_path = Config.BRAIN_PATH
+        hash_count = 0
         if brain_path.exists():
             for entry in brain_path.iterdir():
                 if entry.is_dir() and self._is_conversation_id(entry.name):
                     self._known_sessions.add(entry.name)
-            logger.info(f"Found {len(self._known_sessions)} existing sessions at startup")
+                    # Pre-load content hashes for watched files
+                    for watched in Config.WATCHED_FILES:
+                        fpath = entry / watched
+                        if fpath.exists():
+                            try:
+                                content = fpath.read_text(encoding="utf-8")
+                                h = hashlib.md5(content.encode()).hexdigest()
+                                self._content_hashes[str(fpath)] = h
+                                hash_count += 1
+                            except (OSError, UnicodeDecodeError):
+                                pass
+            logger.info(
+                f"Found {len(self._known_sessions)} existing sessions, "
+                f"pre-loaded {hash_count} content hashes"
+            )
 
     def _is_conversation_id(self, name: str) -> bool:
         parts = name.split("-")